特别提示：本人博客部分有参考网络其他博客，但均是本人亲手编写过并验证通过。如发现博客有错误，请及时提出以免误导其他人，谢谢！欢迎转载，但记得标明文章出处：http://www.cnblogs.com/mao2080/
1、问题描述
最近在做文件上传优化，有些文件发现需要设置ContentType属性才能正常显示，否则就会以文件流的方式走下载去了，于是网上找到了文件后缀与ContentType对应的关系整理成了枚举方便使用。
2、操作方法
package com.enums; public enum MimeTypeEnum { AAC("acc","AAC音频","audio/aac"), ABW("abw","AbiWord文件","application/x-abiword"), ARC("arc","存档文件","application/x-freearc"), AVI("avi","音频视频交错格式","video/x-msvideo"), AZW("azw","亚马逊Kindle电子书格式","application/vnd.amazon.ebook"), BIN("bin","任何类型的二进制数据","application/octet-stream"), BMP("bmp","Windows OS / 2位图图形","image/bmp"), BZ("bz","BZip存档","application/x-bzip"), BZ2("bz2","BZip2存档","application/x-bzip2"), CSH("csh","C-Shell脚本","application/x-csh"), CSS("css","级联样式表（CSS）","text/css"), CSV("csv","逗号分隔值（CSV）","text/csv"), DOC("doc","微软Word文件","application/msword"), DOCX("docx","Microsoft Word（OpenXML）","application/vnd.openxmlformats-officedocument.wordprocessingml.document"), EOT("eot","MS Embedded OpenType字体","application/vnd.ms-fontobject"), EPUB("epub","电子出版物（EPUB）","application/epub+zip"), GZ("gz","GZip压缩档案","application/gzip"), GIF("gif","图形交换格式（GIF）","image/gif"), HTM("htm","超文本标记语言（HTML）","text/html"), HTML("html","超文本标记语言（HTML）","text/html"), ICO("ico","图标格式","image/vnd.microsoft.icon"), ICS("ics","iCalendar格式","text/calendar"), JAR("jar","Java存档","application/java-archive"), JPEG("jpeg","JPEG图像","image/jpeg"), JPG("jpg","JPEG图像","image/jpeg"), JS("js","JavaScript","text/javascript"), JSON("json","JSON格式","application/json"), JSONLD("jsonld","JSON-LD格式","application/ld+json"), MID("mid","乐器数字接口（MIDI）","audio/midi"), MIDI("midi","乐器数字接口（MIDI）","audio/midi"), MJS("mjs","JavaScript模块","text/javascript"), MP3("mp3","MP3音频","audio/mpeg"), MPEG("mpeg","MPEG视频","video/mpeg"), MPKG("mpkg","苹果安装程序包","application/vnd.apple.installer+xml"), ODP("odp","OpenDocument演示文稿文档","application/vnd.oasis.opendocument.presentation"), ODS("ods","OpenDocument电子表格文档","application/vnd.oasis.opendocument.spreadsheet"), ODT("odt","OpenDocument文字文件","application/vnd.oasis.opendocument.text"), OGA("oga","OGG音讯","audio/ogg"), OGV("ogv","OGG视频","video/ogg"), OGX("ogx","OGG","application/ogg"), OPUS("opus","OPUS音频","audio/opus"), OTF("otf","otf字体","font/otf"), PNG("png","便携式网络图形","image/png"), PDF("pdf","Adobe 可移植文档格式（PDF）","application/pdf"), PHP("php","php","application/x-httpd-php"), PPT("ppt","Microsoft PowerPoint","application/vnd.ms-powerpoint"), PPTX("pptx","Microsoft PowerPoint（OpenXML）","application/vnd.openxmlformats-officedocument.presentationml.presentation"), RAR("rar","RAR档案","application/vnd.rar"), RTF("rtf","富文本格式","application/rtf"), SH("sh","Bourne Shell脚本","application/x-sh"), SVG("svg","可缩放矢量图形（SVG）","image/svg+xml"), SWF("swf","小型Web格式（SWF）或Adobe Flash文档","application/x-shockwave-flash"), TAR("tar","磁带存档（TAR）","application/x-tar"), TIF("tif","标记图像文件格式（TIFF）","image/tiff"), TIFF("tiff","标记图像文件格式（TIFF）","image/tiff"), TS("ts","MPEG传输流","video/mp2t"), TTF("ttf","ttf字体","font/ttf"), TXT("txt","文本（通常为ASCII或ISO 8859- n","text/plain"), VSD("vsd","微软Visio","application/vnd.visio"), WAV("wav","波形音频格式","audio/wav"), WEBA("weba","WEBM音频","audio/webm"), WEBM("webm","WEBM视频","video/webm"), WEBP("webp","WEBP图像","image/webp"), WOFF("woff","Web开放字体格式（WOFF）","font/woff"), WOFF2("woff2","Web开放字体格式（WOFF）","font/woff2"), XHTML("xhtml","XHTML","application/xhtml+xml"), XLS("xls","微软Excel","application/vnd.ms-excel"), XLSX("xlsx","微软Excel（OpenXML）","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"), XML("xml","XML","application/xml"), XUL("xul","XUL","application/vnd.mozilla.xul+xml"), ZIP("zip","ZIP","application/zip"), MIME_3GP("3gp", "3GPP audio/video container", "video/3gpp"), MIME_3GP_WITHOUT_VIDEO("3gp", "3GPP audio/video container doesn't contain video", "audio/3gpp2"), MIME_3G2("3g2", "3GPP2 audio/video container", "video/3gpp2"), MIME_3G2_WITHOUT_VIDEO("3g2", "3GPP2 audio/video container doesn't contain video", "audio/3gpp2"), MIME_7Z("7z","7-zip存档","application/x-7z-compressed") ; private String extension; private String explain; private String mimeType; MimeTypeEnum(String extension, String explain, String mimeType) { this.extension = extension; this.explain = explain; this.mimeType = mimeType; } public static MimeTypeEnum findByExtension(String extension) { if(StringUtil.isBlank(extension)){ return null; } for (MimeTypeEnum typesEnum : MimeTypeEnum.values()) { if (extension.equals(typesEnum.getExtension())) { return typesEnum; } } return null; } /** * 描述：Content-Type常用对照 * @param fileType * @return * @since */ public static String getContentType(String fileType) { MimeTypeEnum mimeTypeEnum = MimeTypeEnum.findByExtension(fileType); if(mimeTypeEnum != null){ return mimeTypeEnum.getMimeType(); } return "application/octet-stream"; } }
3、参考网站
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types